Opel Frontera UE. Manual - part 239

6E1–254

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Step

No

Yes

Value(s)

Action

10

Check the intake and exhaust manifold(s) for casting
flash. Refer to Engine Mechanical.

Was a problem found?

—

Verify repair

Go to Step 11

11

1. Review all the diagnostic procedures within this

table.

2. If all procedures have been completed and no

malfunctions have been found, review/inspect the
following:

D

Visual/physical inspection

D

Tech 2 data

D

Freeze Frame data/Failure Records buffer

D

All electrical connections within a suspected
circuit and/or system

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E1–255

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

CUTS OUT, MISSES SYMPTOM

DEFINITION:
Steady pulsation or jerking that follows engine speed;
usually more pronounced as engine load increases.

Step

Action

Value(s)

Yes

No

1

Was the On–Board Diagnostic (OBD) System Check
performed?

—

Go to Step 2 

Go to OBD

System

Check 

2

1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,

correct the condition as instructed in the bulletin.

Was a bulletin found that addresses the symptom?

—

Verify repair

Go to Step 3 

3

Was a visual/physical check performed?

—

Go to Step 4 

Go to Visual /

Physical

Check 

4

Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams in
Electrical Diagnosis.

Was a problem found?

—

Verify repair

Go to Step 5 

5

Monitor ”Long Term Fuel Trim” on the Tech 2.

Is the ”Long Term Fuel Trim” in the negative range (rich
condition)?

—

Go to Step 6 

Go to Step 7 

6

Check items that can cause the engine to run rich.
Refer to ”Diagnostic Aids” in DTC P0172.

Was a problem found?

—

Verify repair

Go to Step 9 

7

Is the long term fuel trim significantly in the positive
range (lean condition)?

—

Go to Step 8 

Go to Step 9 

8

Check items that can cause the engine to run lean.
Refer to Diagnostic Aids in DTC P0171.

Was a problem found?

—

Verify repair

Go to Step 9 

9

1. Check for incorrect idle speed. Ensure that the

following conditions are present:

D

Engine fully warm.

D

Accessories are OFF.

2. Using a Tech 2, monitor the IAC position.

Is the IAC position within the specified values?

Between 5

and 50

counts

Go to Step 11

Go to Step 10

10

1. Visually/physically inspect for the following

conditions:

D

Restricted air intake system. Check for a
restricted air filter element, or foreign objects
blocking the air intake system.

D

Check for objects blocking the IAC passage or
throttle bore, excessive deposits in the IAC
passage and on the IAC pintle, and excessive
deposits in the throttle bore and on the throttle
plate.

D

Check for a condition that causes a large
vacuum leak, such as an incorrectly installed
or faulty crankcase ventilation valve or brake
booster hose disconnected.

Was a problem found?

—

Verify repair

Go to Step 11

6E1–256

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Step

No

Yes

Value(s)

Action

11

Check the injector connections. If any of the injectors
are connected to an incorrect cylinder, correct as
necessary.

Was a problem found?

—

Verify repair

Go to Step 12

12

1. Perform the Injector Coil/Balance Test.

Was a problem found?

—

Verify repair

Go to Step 13

13

1. Check for fuel in the pressure regulator vacuum

hose.

2. If fuel is present, replace the fuel pressure regulator

assembly.

Was a problem found?

—

Verify repair

Go to Step 14

14

Check for proper ignition voltage output with spark
tester J 26792.

Was a problem found?

—

Verify repair

Go to Step 15

15

1. Remove spark plugs and check for gas or oil fouling,

cracks, wear, improper gap, burned electrodes of
heavy deposits.

2. If spark plugs are fouled, the cause of fouling must

be determined before replacing the spark plugs.

Was a problem found?

—

Verify repair

Go to Step 16

16

Check for a loose ignition control module ground.

Was a problem found?

—

Verify repair

Go to Step 17

17

Using a Tech 2, monitor the TP angle with the engine
idling.

Is the TP angle at the specified value and steady?

0%

Go to Step 18

For further

diagnosis,

refer to DTC

P0123  

18

Check the PCV valve for proper operation.

Was a problem found?

—

Verify repair

Go to Step 19

19

Check for the following engine mechanical problems:

D

Low compression

D

Leaking cylinder head gasket

D

Worn or incorrect camshaft

D

Incorrect valve timing

D

Sticking or leaking valves

D

Camshaft drive belt slipped or stripped.

Was a problem found?

—

Verify repair

Go to Step 20

20

Check for faulty motor mounts. Refer to Engine
Mechanical for inspection of the mounts.

Was a problem found?

—

Verify repair

Go to Step 21

21

1. Review all the diagnostic procedures within this

table.

2. If all procedures have been completed and no

malfunctions have been found, review/inspect the
following:

D

Visual/physical inspection

D

Tech 2 data

D

Freeze Frame data/Failure Records buffer

D

All electrical connections within a suspected
circuit and/or system

Was a problem found?

—

Verify repair

Contact

Technical

Assistance

6E1–257

X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

HESITATION, SAG, STUMBLE SYMPTOM

DEFINITION:
Momentary lack of response as the accelerator is pushed
down. Can occur at any vehicle speed. Usually most
pronounced when first trying to make the vehicle move,
as from a stop sign. May cause the engine to stall if severe
enough.

Step

Action

Value(s)

Yes

No

1

Was the On–Board Diagnostic (OBD) System Check
performed?

—

Go to Step 2 

Go to OBD

System

Check 

2

1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,

correct the condition as instructed in the bulletin.

Was a bulletin found that addresses the symptom?

—

Verify repair

Go to Step 3 

3

Was a visual/physical check performed?

—

Go to Step 4 

Go to Visual /

Physical

Check 

4

1. Check the fuel control heated oxygen sensor

(HO2S1). The HO2S1 should respond quickly to
different to throttle positions. If it doesn’t, check for
silicon or other contaminants from fuel or use of
improper RTV sealant. The sensors may have a
white powdery coating. Silicon contamination
sends a rich exhaust signal which causes the ECM
to command an excessively lean air/fuel mixture.

Was a problem found?

—

Verify repair

Go to Step 5 

5

Check the fuel pressure. Refer to Fuel System
Pressure Test.

Was a problem found?

—

Verify repair

Go to Step 6 

6

Observe the ”TP angle” display on the Tech 2 while
slowly increasing throttle pedal.

Does the TP angle display steadily increase from 0% at
closed throttle to 100% at WOT?

—

Go to Step 7 

Go to Step 13

7

Monitor ”Long Term Fuel Trim” on the Tech 2.

Is the ”Long Term Fuel Trim” in the negative range (rich
condition)?

—

Go to Step 8 

Go to Step 9 

8

Check items that can cause the engine to run rich.
Refer to Diagnostic Aids in DTC P0172.

Was a problem found?

—

Verify repair

Go to Step 10

9

Check items that can cause the engine to run lean.
Refer to Diagnostic Aids in DTC P0171.

Was a problem found?

—

Verify repair

Go to Step 10

10

Check for proper ignition voltage output with spark
tester 5-8840-0383-0. For the procedure, refer to
Electronic Ignition System.

Was a problem found?

—

Verify repair

Go to Step 11

11

Check for a loose ignition control module ground.

Was a problem found?

—

Verify repair

Go to Step 12